一道完成时的小选择题~a number of fuctions【 】to the computer since it was first invented in 1946问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作
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![一道完成时的小选择题~a number of fuctions【 】to the computer since it was first invented in 1946问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作](/uploads/image/z/14846310-54-0.jpg?t=%E4%B8%80%E9%81%93%E5%AE%8C%E6%88%90%E6%97%B6%E7%9A%84%E5%B0%8F%E9%80%89%E6%8B%A9%E9%A2%98%7Ea+number+of+fuctions%E3%80%90+%E3%80%91to+the+computer+since+it+was+first+invented+in+1946%E9%97%AE%E9%A2%98%E6%98%AF%E4%B8%BA%E4%BB%80%E4%B9%88%E9%80%89%E6%8B%A9have+been+added%E8%80%8C%E4%B8%8D%E6%98%AF%E7%94%A8have+been+adding%E5%91%A2%3F%E4%BB%96%E4%B8%8D%E6%98%AF%E4%BB%8D%E6%97%A7%E5%9C%A8%E6%B7%BB%E5%8A%A0%2C%E8%A6%81%E7%94%A8%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E8%BF%9B%E8%A1%8C%E6%97%B6%E4%B9%88%3F%E8%A1%A8%E7%A4%BA%E5%8A%A8%E4%BD%9C)
一道完成时的小选择题~a number of fuctions【 】to the computer since it was first invented in 1946问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作
一道完成时的小选择题~
a number of fuctions【 】to the computer since it was first invented in 1946
问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作持续?
一道完成时的小选择题~a number of fuctions【 】to the computer since it was first invented in 1946问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作
a number of fuctions【 】to the computer since it was first invented in 1946
问题是为什么选择have been added而不是用have been adding呢?他不是仍旧在添加,要用现在完成进行时么?表示动作持续?
答:have been added 和have been adding的区别,主要不在时态,而在语态.前者是现在完成时的被动语态.表示:自从1946年计算机首次发明以来,很多功能(已经被)加入了计算机中.
people add a number of functions to the computer 的被动语态结构是a number of functons be added to the computer
其现在完成时态是:A number of functions have been added to the computer since ...
其现在完成进行时态是:A number of functions have been being added to the computer since...
A number of new functions _____ to the computer since it was first invented in 1946.
A.have added B.were added C.have been adding D.have been added
原题中并没有现在完成进行时的被动语态这选项.你的想法是可以的.但语态结构忽略了.
完成时:have done
过去完成时的被动形式,被添加
这是现在完成时的被动语态结构。